Elevator-gate



(No Model.)

4B, 0i VANDUZBN.

. BLEVATOR GATE.

10.288,383. PatentedNw 13,1883.

Clive.

25 I i an elevator-hatch, showing the elevatorya little l umm smi-E1s Pari-"SNT Critica.'

IBENJMIIN Io. vnnnuznnfou CINCINNATI, oIIIo.

4-I-:LEvfAToRLGATE.`

`f.TPE,UIFICAIION formingpart'ofLetters PatelitINo. 288,383, dated November 13, 1883.

` l i Application filed September 15,1882.` (NoInIodcl.)`

I Be it known that I, BENJAMIN o. `vinim- IZEN, of thecitym of Cincinnati, Hamilton coun- "tyfand State ofIOhio, have invented certain new and useful Improvements `in Elevator- `I Gates, of which the following is a specification.

` 1` I The object of my inventionis to provide a I y 1 gate for protecting the elevator-hatch, which IoI gate shall be automatically opened and closed as the elevator'approachesor recedesfrom a iioor, and which shall be so simply con- I structed as to be easily attachedlto an ordifor automatically opening and closingan ele- I vator-gate; but all such mechanism has here- NI tofore been more or less complicated and lia- Ible to get out of order, and not readilyapplied I I "tofordinary elevators.

I` comes all of these objections, and can be at- I I tachedto elevatorsat a very small expense.

t My invention over- Referring to the drawings forming part of this specification, Figure l is a front view of above the iioor and the gate down. I Fig. 2 is y Ia side view of an elevator-hatch, showing the II platform of the elevator on a level with the lioor and the gate elevated; and Fig. 3 is a I side view of an elevator-hatch, showing a modi- I fication of Imy invention. I

A is the platform of theelevator, which I ,I I has the usual side or lifting posts, a, which Iss move upl and down between the guideways B.

Iloone` of the posts a is secured a double iny oline', C, projecting preferablytoward thefront of the elevator. I i

To theway B which is at that side of the elevator to which the double incline is attached is secured a bracket, b, projecting to- `I ward the front of the elevator, and in the end of which` is fulcrumed a lever, D.

IAt the side of thelower end of the lever D is a roller-smid,- d, on .which is a roller, d',

incline C as theelevator passes up or down.

I To the upperend ofthe lever D is connected post and is connected to the gate f, near scribed, is as follows.

the point at which the latter pivoted to the post F. rlhe preferable methodfor connecting thefend ofthe cord E to the gate is that shown in the drawings.

`At or near the end ofthe bar which is pivoted to a Xed support, as F,`is a quadrant,

G, the center of which is formed bythe pin `orpivot Z, by which the gate is pivoted to thepost, and at the lower end of this quadrant is a1ug,Ig, to which Athe cord is .con-- AedIto the gate that oscillation of the quadrant oscillates the gate.` In `the drawingsa preferred Inode of connection is shown, the

quadrant being there shown applied directly to the side of the gatef. f' I ,To the pivoted end ofthe gate is connected the usual counterbalance-weight, made-of any desired form. f I

The operation of my invention, as above de- Supposing the gate to be down and the elevator at thepoint shown in Fig. l, and descending, when the lower end of the double incline C comes in contact with theroller d at the lower end of the lever D it forces this end of the lever in a' direction away from the post aI, which causes the upper end of the lever to pull on the cord E, and

this, passing .over the pulleye and around the `quadrant G, causes the gate to rise until the roller d` is at the widestpart of the double inoline, at which time the elevator-platform is on a level with the iloor, and the parts assume the position shown in Fig. 2. As the elevator continues to descendthe weight of the free ends of the gate causes it to descend, the roller the approach to the elevatorclosed. WVhen the elevator moves up instead of down the hatchway, themotion is precisely the same as that I described. If the elevator runs very rapidly,

the length of thedouble incline must be in- I creased in order that the gate shall not-be `raised and lowered too suddenly, the length be desirable to connect the double incline to the rear side of the post a, as shown by'dotted Q y v assess lines in Fig. 2,"in Whiclieventthe lever D should bepivoted at one end, insteadof at the middle, to the bracket b, the end of the cord E and the roller el both being connected to the opposite end of the lever, all of which is shown by dotted lines in Fig. 2; and when this construction is adopted the operationis practically the same as before described.

In the modication shown in Fig, 3 the lever D is made i-n the form of a bell-crank, one arm of which is provided v` ith the roller d, and to the other arm, Which projects tward the front of the elevator, is connected the cord E, thus dispensing with the pulley e, and yet operating in a manner similar to that before described. This operating mechanism4 maybe readily connected to any ordinary elevator, and because of its simplicity it is not liablev to get out of order, and its operation is effective and certain.

What I claim as neuT and of my invention, and desire to secure by Letters Patent, is-

1. In a device for operating elevator-gates,

v the combination of the bar or gate f, pivoted at or near one end, and the quadrant G, ap-

plied to the gate at the pivot Z, upon which the gate f turns, vand the cord E, substantially as and for the purposes specified.

2. In a device for controlling the entrance to an elevator, the combination of the bar or gate f, pivoted at or near one end to a fixed support7 the quadrant G, connected directly to the gate at the pivot Z, and concentric With the pivot, and cord E, connected to said quadrant, and mechanism for enabling the movement of theelevator-car to operate said cord, substantially as and for the purposes specified.

3. The elevator provided With double incline C, in combination With the lever D, pivoted at the center to the bracket b, secured to the guideway B, and provided at one end Withthe roller d', the other end being connected yto the lifting-cord. E, and the gate f, pivoted to post F, and having a quadrant, G, to which the end of the lifting-cord is fconnected, said post being provided with a pulley,

e, over which the cord 'E passes, substantially as and for the purposes specified.

BENJAMIN C. VANDUZEN.

Witnesses: n f

EDWARDS RITCHIE, J. WVM. STREHLI. 

